It's a nice layout with plenty of clean, clear readable content and it's easily navigated.
I realize that you're using WordPress but you need to revise your page titles to include keywords and keyphrases. As a title, "Gardenscope" is of no significant benefit unless that's what the user is searching for.
This seems odd to me:
Great Garden Gifts | GardenScope
The little squares under some of the links seem like check boxes. I find them a little confusing. You might also consider making it a bigger priority of telling users that these links lead off your site to an online store though. I felt tricked until I'd read the content in the first few paragraphs.
You might also consider changing "About" to "Contact". That's one thing your users will be looking for and they'll get frustrated if they're not able to find if easily.
I'd tend to think gardeners would be happy to help each other with questions, tips, advice and user submitted photos. I'd urge you to consider building a community environment by adding a forum where users can participate versus being perceived as more of an informational site where users can read articles and leave a reply.
.02